22158805 has 8 divisors (see below), whose sum is σ = 26623872. Its totient is φ = 17704848.

The previous prime is 22158793. The next prime is 22158809. The reversal of 22158805 is 50885122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22158805 - 2²¹ = 20061653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (3327984).

Almost surely, 2^22158805 is an apocalyptic number.

It is an amenable number.

22158805 is a deficient number, since it is larger than the sum of its proper divisors (4465067).

22158805 is an equidigital number, since it uses as much as digits as its factorization.

22158805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 22158805 is about 4707.3139899522. The cubic root of 22158805 is about 280.8765261740.

The spelling of 22158805 in words is "twenty-two million, one hundred fifty-eight thousand, eight hundred five".